制氮机在等离子切割领域的应用

等离子空气切割法以干燥的压缩空气作为加工气体，主要用于切割碳钢，也可用于切割不锈钢和铝。由于空气主要由氮气和氧气组成，切割碳钢时，切口中氧与铁的放热反应提供了附加的热量。

Using dry compressed air as processing gas, plasma air cutting is mainly used for cutting carbon steel, stainless steel and aluminum. Because the air is mainly composed of nitrogen and oxygen, the exothermic reaction of oxygen and iron in the incision provides additional heat when cutting carbon steel.

同时生成表面张力低、流动性好的FeO熔渣，改善了切口中熔融金属的流动性，因此不但切割速度较快，而且切割面较光洁，切口下缘基本不粘渣，切割面斜角较小。切割不锈钢和铝时，氧与不锈钢中的铬和铝起反应，其切割面较粗糙，一般对切割表面质量要求较高时不采用这种加工方法。

At the same time, FeO slag with low surface tension and good fluidity is generated, which improves the fluidity of molten metal in the incision. Therefore, not only the cutting speed is fast, but also the cutting surface is smooth, the lower edge of the incision is basically free of slag, and the cutting surface angle is small. When cutting stainless steel and aluminum, oxygen reacts with chromium and aluminum in stainless steel, and the cutting surface is rough. Generally, this kind of processing method is not used when the cutting surface quality is high.

等离子空气切割法主要存在以下缺点：

The main disadvantages of plasma air cutting are as follows

(1)切割面上附有氮化层，焊接时焊缝中会产生气孔，因此用于焊接的切割边，需用砂轮打磨，去除氮化层。

(1) There is nitriding layer on the cutting surface, and there will be pores in the weld during welding. Therefore, the cutting edge used for welding needs grinding wheel to remove the nitriding layer.

(2)由于存在氧化作用，电极和喷嘴易损耗，使用寿命较短。等离子氮气水涡流切割法以氮气作为工作气体，主要用于切割不锈钢和铝。工作气体通过涡流环形成涡旋气流，使等离子流也以涡旋方式射向工件，从而可获得一个斜角极小的切割边。在工作气体的周围，是经过处理的高压水流，使电弧能量密度大大提高，形成了温度极高、挺度好及流速大的等离子弧。另外，部分水离解成氢和氧，对切割过程也有一定的促进作用。

(2) Due to oxidation, the electrode and nozzle are easy to wear and tear, and the service life is short. Plasma nitrogen water vortex cutting method uses nitrogen as working gas, which is mainly used for cutting stainless steel and aluminum. The working gas passes through the vortex ring to form a vortex flow, which makes the plasma flow also shoot to the workpiece in a vortex way, so as to obtain a cutting edge with a very small angle. Around the working gas, there is treated high-pressure water flow, which greatly improves the energy density of the arc and forms a plasma arc with high temperature, good stiffness and high flow rate. In addition, part of the water dissociates into hydrogen and oxygen, which also promotes the cutting process.

和其他等离子切割方法相比等离子氮气水涡流切割法具有以下特点：

Compared with other plasma cutting methods, plasma nitrogen water vortex cutting method has the following characteristics

(1)切割速度快；

(1) The cutting speed is fast;

(2)切割质量好。切口宽度小，切割面光洁，斜角极小，切口下缘不粘渣

(2) Good cutting quality. The width of the incision is small, the cutting surface is smooth, the bevel angle is very small, and the lower edge of the incision is not sticky

(3)切割变形很小，精度高；

(3) The cutting deformation is very small and the precision is high;

(4)喷嘴寿命长；

(4) The service life of nozzle is long;

(5)适合水下加工，基本无烟尘和弧光，噪声低。

(5) Suitable for underwater processing, basically no smoke and arc, low noise.

以上就是小编为大家介绍的关于制氮机在等离子切割领域的应用的介绍，希望可以帮助大家，更多的精彩内容可以关注：https://www.sdqyjn.com

The above is the introduction about the application of nitrogen making machine in the field of plasma cutting. I hope it can help you. More wonderful contents can be paid attention to https://www.sdqyjn.com